What Causes Bush Derangement Syndrome?

The Belmont Club has an interesting analysis of the reason for the rabid hatred of President Bush:

This secret guilt may stand at the center of the inexplicable hysteria with which the Left regard the neocons and President Bush in particular. Recently a Ramussen poll showed that "only four in ten Democrats will commit to the idea that George Bush did not know of the 9/11 attack in advance. Sixty-one percent of them either believe he did or are unsure." What could account for such a widespread belief in a bizarre conspiracy theory? Why do otherwise intelligent people insist, in the face of incontrovertible evidence that "fire does not melt steel" and embrace all kinds of ridiculous fantasies? I think the extreme demonization of George W. Bush and the neocons is psychologically necessary in order to restore a feeling of moral superiority to the Leftist universe. They would be guilt stricken without it. The more intelligent Leftists must be subconsciously aware of how monstrous the enemy is and secretly cognizant of how great is the betrayal of their own ideals. They can't confront this fact; cannot accept that they are delivering children, as Caroline Glick's example above shows, to cruel murderers. And in order to obtain some kind of solace and to have the effrontery to march in support of "freedom fighters" who are nothing but sadistic thugs, it is necessary for them to invent something worse; to make a caricature devil of GWB to place them once again, if not upon the side of angels, at least in the camp of the lesser evil. George Bush must be made nothing less than the moral equivalent of Hitler or else their ethical universe would collapse.

Hat tip to Uncorrelated.